Fastening device for anchorage to a receiving seat

ABSTRACT

A fastening device for anchorage to a receiving seat is described. The device comprises a body with a threaded or non-threaded, blind or through hole, or with a threaded or non-threaded pin, with projecting side walls and a piano-wire cage extending around the body in a resilient manner.

[0001] The present invention relates to a fastening device for anchorageto a receiving seat.

[0002] The object of the present invention is to provide a fasteningdevice for anchorage to a substantially rectangular receiving seat,which device is of simple construction and easy to put in place withoutthe use of tools for its installation.

[0003] The present invention achieves the above-mentioned objects bymeans of a fastening device for anchorage to a receiving seat having thecharacteristics referred to specifically in the appended claims.

[0004] Further characteristics and advantages of the present inventionwill become clear in the course of the following detailed descriptionwhich is provided purely by way of non-limiting example with referenceto the appended drawings, in which:

[0005]FIG. 1 is a view of the device of the present invention,

[0006]FIG. 2 is a plan view of FIG. 1,

[0007]FIG. 3 is a perspective view of the device of the presentinvention, fitted in the receiving seat,

[0008]FIGS. 4-7 show the device of the present invention in the stagesof its fitting in the receiving seat, and

[0009]FIG. 8 is a perspective view of a variant of the device of thepresent invention.

[0010] With reference to the drawings, the device of the presentinvention, in the installed condition, is generally indicated 2.

[0011] The device 2 comprises a body 3 with projecting side walls 4 anda threaded hole 6. The body 3 is surrounded by a cage 8 made of pianowire.

[0012] The cage 8 is fitted in seats 5 suitable for restraining the cage8. The cage 8 is resilient and the device 2 is fitted as follows.

[0013] With reference to FIGS. 4-7 and upon the assumption that thedevice 2 is to be fitted in a seat 12, for example, a rectangular seatformed in a rolled section L, the device 2 is inclined in order toinsert the shorter side of the device in the seat 12.

[0014] The side with the more projecting wall is outside the seat 12 atthis point; the device is acted on so that the cage (resilient wire) iscompressed and a slight pressure is exerted towards the seat; theprojecting side of the device 2 facilitates the complete insertion ofthe device into the rolled section L, preventing interference with thereceiving component and being anchored therein.

[0015] The advantages of a device according to the present invention areclear from the foregoing description; tools are not required for itsinstallation and manual insertion is facilitated by the resilience ofthe piano-wire cage and therefore requires minimal effort.

[0016] In use, the large reaction surface on the rear side of thereceiving rolled section ensures resistance to pulling and, moreover,the use of the piano wire, which fits tightly and resiliently in thereceiving seat, confers on the device of the present inventionanti-vibration characteristics and security against accidental slippingout of the rolled section prior to assembly.

[0017] The device of the present invention can be fitted in blindelements where access to the interior is not possible, for example,metal box sections.

[0018] The device can be mounted on any material, for example, lightalloy, steel, plastics material, etc., with minimal thicknesses, thussolving the problems of forming threads in small thicknesses and,moreover, the device can be fitted in and removed from its seat severaltimes without alteration of its characteristics.

[0019] In the embodiment shown in FIG. 3, the body 3 with the threadedhole 6 is engaged by a screw D.

[0020] In an embodiment which is not shown, the body 3 may be replacedby a threaded or non-threaded pin on a rectangular base; in anotherembodiment, likewise not shown, the threaded hole 6 may be replaced by ablind or through seat suitable for receiving a fastening device, forexample, a force-fitted or snap-engaged device.

[0021] Naturally, the principle of the invention remaining the same,wide variations may be applied to the embodiments described andillustrated without thereby departing from the scope of protection ofthe invention.

[0022] For example (FIG. 8), the seats 5 may be formed laterally in thebody 3 and, by interference, restrain the cage 8 with friction, allowingthe cage to slide on the body 3 so that the present invention can beapplied to small and variable thicknesses.

[0023] If the receiving seat is recessed, the device of the presentinvention can be arranged flush therewith.

What is claimed is:
 1. A fastening device for anchorage to a receivingseat, wherein it comprises a body with projecting side walls and apiano-wire cage extending around the body in a resilient manner.
 2. Afastening device according to claim 1, wherein the body comprises athreaded hole.
 3. A fastening device according to claim 1, wherein thebody comprises a threaded or non-threaded pin.
 4. A fastening deviceaccording to claim 1, wherein the body comprises a blind or throughseat. The whole as described and illustrated and for the purposesspecified.